1) On-line data collection of all kinds is an order of magnitude more efficient today than in the 1970s when PIMS was starting out.
2) Far more sophisticated data analysis (artificial intelligence) and scenario modelling (with probability density functions) have become practical as computer power has repeatedly doubled and re-doubled. (Moore´s law is that the number of transitors that can be placed on a chip doubles every two years, i.e. the data density doubles. This phenomenon has occured over the past 50 years and is expected to continue, at a somewhat reduced rate, untll 2020.)
3) The Internet has become ubiquitous, leading to a global market for PIMS analysis.
Therefore one would expect SPI and its consulting arm, PIMS Associates Inc., to have enjoyed a surge of popularity congruent with Internet expansion. Seizing the global opportunties would have led to the same spectacular growth enjoyed by the premier strategy consulting firms: McKinsey & Company, the Boston Consulting Group, and Bain & Company. These all surged from the 70's and 80's onwards. Their (2009) ranges are:
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